How to Build an Erupting Volcano

Have fun and make a mess, all in the name of science.

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Up next in How to Do Fun Tech & Science Projects (52 videos)

Teach your children technical skills and science in fun ways with the tech and science projects in this Howcast video series.

 
 

You Will Need

  • 6 c. flour
  • 2 c. salt
  • 1 c. water
  • Small plastic bottle
  • Baking sheet
  • Acrylic paint
  • Paint brushes
  • 1/2 c. vinegar
  • 1 tsp. red food coloring
  • Dishwashing detergent
  • Tissue
  • 3-4 tbsp. baking soda
  • Cardboard (optional)
  • Glue (optional)
  • Toy trees (optional)

Steps

  1. Step 1

    Make clay

    Make homemade clay by mixing the flour and salt in a bowl, and then adding water until the mixture is smooth in consistency.

  2. Step 2

    Center bottle

    Center the bottle on the baking sheet.

  3. Cut a piece of cardboard so it fits in the baking pan, and glue the bottle to it. You can paint this cardboard to match the volcano.

  4. Step 3

    Shape volcano

    Shape the clay around the bottle to make it look like a volcano. Start at the bottom, creating a wide base, and work toward the top. Make sure to leave the mouth open.

  5. Step 4

    Paint the volcano

    Paint the volcano with the acrylic paint to make it look more realistic.

  6. Decorate the base of the volcano with toy trees to add more life.

  7. Step 5

    Add liquids

    Pour the vinegar, red food coloring, and a few drops of dishwashing detergent into the bottle.

  8. Step 6

    Add baking soda

    Fold the baking soda into a tissue and drop it into the bottle, and watch in wonder as your volcano erupts.

  9. Did you know? When Mount St. Helens erupted in 1980, the eruption caused the mountain’s elevation to drop 1,314 feet.

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